Flow-through concrete edge forming system and method

Abstract

A flow-through concrete edge forming system utilizes a body member that has perforations thereon. The body member is placed at an elevation transition area of a monolithic slab as an edge forming form. Once the slab is poured, a parge coating is placed on the outer surface of the body member such that the parge coating either binds to the outer surface or penetrates the body member through a series of perforations on the body member in order for the parge coating to bind with the concrete of the slab which has yet to set thereby producing a clean and solid finish of the outer surface of the slab at the transition area. The body member may have either a rectangular profile, a keyhole profile or may have the perforations on a series of inwardly directed deformations.

1 . A form for forming a monolithic concrete slab having a depression at a transition area, the form comprising an elongate body member having a first section with a first series of perforations wherein the body member is placed at the transition area and maintained thereat after an amount of concrete is poured to construct the slab. 
   
   
       2 . The form as in  claim 1  wherein the first series of perforations are located on an inwardly directed deformity. 
   
   
       3 . The form as in  claim 1  wherein the body member has a second section with a second series of perforations, the second section separated from the first section by a bridge. 
   
   
       4 . The form as in  claim 3  wherein the first series of perforations are located on an inwardly directed first deformity and the second series of perforations are located on an inwardly directed second deformity. 
   
   
       5 . The form as in  claim 1  further comprising a flange extending downwardly from the body member, the flange having a bend line formed thereon. 
   
   
       6 . The form as in  claim 1  wherein the body member has a keyhole profile. 
   
   
       7 . The form as in  claim 1  wherein the body member has a rectangular profile. 
   
   
       8 . The form as in  claim 7  wherein the body member has a lip for welding the body member to another structure. 
   
   
       9 . A method of forming a monolithic concrete slab having a depression at a transition area, the method comprising the steps of:
 providing an elongate body member having a first section with a first series of perforations;   placing the body member at the transition area;   pouring the slab; and   maintaining the body member at the transition area after the slab is poured.   
   
   
       10 . The method as in  claim 9  wherein the first series of perforations are located on an inwardly directed deformity. 
   
   
       11 . The method as in  claim 9  wherein the body member has a second section with a second series of perforations, the second section separated from the first section by a bridge. 
   
   
       12 . The method as in  claim 11  wherein the first series of perforations are located on an inwardly directed first deformity and the second series of perforations are located on an inwardly directed second deformity. 
   
   
       13 . The method as in  claim 9  further wherein a flange extends downwardly from the body member, the flange having a bend line formed thereon. 
   
   
       14 . The method as in  claim 9  wherein the body member has a keyhole profile. 
   
   
       15 . The method as in  claim 9  wherein the body member has a rectangular profile. 
   
   
       16 . The method as in  claim 15  further comprising the steps of:
 providing the body member with a lip; and   welding the body member to another structure at the lip.